[Insight-users] Inter-slice Movement Correction

[Luis Ibanez]

Hi Don,

Form your verbal description it is hard to picture what kind of
misregistration is happening between the slices.

Could you post somewhere in the web the two slices that you are
trying to register ?

Taking a look at the images will help us to figure out what kind
of registration components you may need to combine here.


   Thanks


      Luis



-----------------
Don Bigler wrote:
> ITK-Users,
>    I am attempting to fix an interesting MRI artifact that occurs during 
> long acquisitions.  The scanner uses multiple packages to acquire the 
> entire head image and if the patient moves at all during the scan an 
> inter-slice misregistration occurs.  Affine normalization of the image 
> to a template does not fix the artifact.  I attempted to fix the problem 
> by performing a 2D rigid body registration from one slice to the next 
> using the ImageRegistration5.cxx example as a guide.  It uses the 
> CenteredRigid2DTransform, MeanSquaresImageToImageMetric, and 
> LinearInterpolateImageFunction.  I successfully modified the code to run 
> from one slice to the next using a 3D volume as input, however it did 
> not fix the problem.  Here are my questions:
> 
> 1. Would the approach work better using another metric?
> 2. Is there a better approach to solving this problem?
> 
> Thank you for your time.
> Don Bigler
>